Rape flowers are bitter, so you should consider whether you can eat them. If it is because of the residue of pesticide impurities and the vegetable itself is broken and bitter, it can't be eaten. If it is due to improper cooking, long freezing time or sensitivity to the taste of rapeseed itself, it is edible.

Rape flowers are rich in pollen, and the oil content of seeds reaches 35-50%, which can be used for oil extraction or feed. In addition, the tender stems and leaves of rape flowers can also be eaten as vegetables. Rape flower is the largest edible vegetable oil raw material in China. The fruit juice made of rape flowers is said to have the effect of preventing hypertension, anemia and colds in medical treatment.